Welt hook



July 27, 1943- H. J. sTRAUssBERGER `2,325,208

WELT HOOK 2 Sheets-Sheet l Original Filed June 29. 1939 Z371- fnv enz/01" Hans J tra assbelbyer July 27, 1943- H. .1. sTRAUssBn-:RGER 2,325,208

WELT- Hook Original Filed June 29, 19559 2 Sheets-Sheet 2.

Aapplication'is a division.

e turningfwelts on straightknitting machines may and the-other` bari vsection 24 having a. seriesof vthe provision of welt hooks in` a' welt bar, each :That portion `of theshank Sli-'which projects hook'having' at one end allrelatively-long.beard A25 -foutwardly ofthebarsections22-and'2'4is formed whereby the latter may springably move towards atits normal front side with afneedle. beard reiand away from the body-of the'shank, and'provceiving-groovelll' ,The hook '-end38 .of the welt 'vided with al pivotal latch disposed to swing -hookrshankiSB'is preferably exible, constituting -6- 6 of Figure 4; j f

Patented July 27, 1943 f l' .v l

nIansJS:1'ai1ssbeiger, BrookllmNQY., assi non., e to Alfred Hofmann, Inc., West NewYork, N J. Y. l Original application June MLU-1939,v Serial; No. l

281,'767gl'f'Dividedk and this application'Aprill'Z, iv

1940, Serial No. 330,027' l :.1'r :l

..17"C1aims. c1.'66-96) 5 The present invention relates towelt hooks matic representations illustrating the hook and and, more particularly, to Awelt'hoolrs especially associated machine`..parts`. during .fthe Avar ious intended for usein :forming weltsinsstraight stages oftheirffunctionsto eiTect-thefformation knitting machines, according.y to the methodqdisf .'of the welts. f closed in myco-pending application, Serial Num'- l Referring more .particularlyfto the drawings, ber 281,767, filed June. 29, 1939, "of which this wherein like characters of referenceywill'desigl. ry fnate corresponding parts throughout, ther.e is The invention primarily aimslto Vprovicli'ejwelt lshownin Figures l and A2 a welt bar 20 comprishooks :having anoveliconstruction whereby cering complementary Vbar sections 22 and 24,:one tain limprovements/inthe mode of. operationsfor 10 {bar section 22. having-a longitudinal recess' 26.

be had. :spaced'transversalgrooves andholes, such as Aparticular object. of Athe :invention lresidesin represented at 28 .and-:30 respectively. The bar the' provision oflweltl hooks havingspringbeard's sections22 and Marerigidly held together by and latches cooperativelyA associated therewith, 15 means'of. bolts 32, or'llike fastening elements,

and provided with needle-beard receiving-grooves "that securely clamptherebetween a bank ofrwelt relatively disposedv` with vrespect-to said .hook lhooks 34. l i j beards and latches whereby to 'assure-positive Eachweltjhook 34 preferably has the 'construcengagement and co-functionOfeIementsfor ythe. tion shown insFigures-B, 4, andi-and essentially manipulating of. the loops'in setting up courses. v20 Cornprises'a shank 36;-`a:hook"endf38,. and a'-blltt f to effect the formation of welts on-fstraight knitend 40,.a portionfof theshankandthe butt' end ting machines. f f l -ibeingvrespectively adapted' tozit` into a groove The invention is particularly characterizedby 28 .and a hole 30lof"the'barssection`24 (Figure 2)- l towards and 'away from thelhookbeardgsaid a beard 44 withfwhicha latch 46 is adapted for latch being positively limited in its swinging ,30 cooperative action. -llzFor that purpose, fthe'hook movements so'that it may/be caught vand .disshank 36 is shownfatitslnormal rear side. as placed by a loop or! strand ofi-yarn being `moved formed wtha pair of ears lbet'vveen which` is relatively along the length of the welt hook;y pivotally `IIi0untdthe"1atch4S, the `tp. ;5ll 0fI Other important objects'and advantages.y of Whichhasa slightrecessorgroove 52engageable the inventionvwill-'be in part obvious and in. part 3 Vwith 'the tip1`f54 of thehook beard, as .more pointed 'out hereinafter. l.' .clearly shown in Figure:5." A;pin.-56 may constif In order that the; invention andlits'rmode of tute the pivot for thelatch36.` operation Vmay be readily understoodiby. those Fromtheforegingdesciptimil? will b81111- skilledv in the art,v Ihave, in 'the' accompanying vderstood that the latch, :AB-'imay 'be's'wung about drawings and in the detailed description'based 401its pivotpin 56easily,'withoutopeningorclosing thereupon,set out a possible" embodiment ofthe springs, but :under'suiiicie-ni.'frictionthat it tends invention, :.1 e;.;- to remain in its set position .to which it maybe In these drawings:V f swunglalthough. it will operate: A as Well even if Figure 1 is a .top`plan ofia portion ofrganwelt free' and loose; In one position,the`latch 46 may bar provided with a .bank of welt hooks con- 5 .be swung downwardly to. engage and. guard the structed in accordance with this invention; tip 541'of theihookkbeaid-.M by. thegroove- 5.2" at Figure 2 is an enlarged section taken on line the tip :5U ofathelatch; butzthelatch is preferably 2-2 of Figurel; 'l 1 'of a.length-.thatitwillvonly slightly overlap the Figure 3 isa top plan of the .preferred latch tip 54 Gf the hOOkbe'ardM'lWhereby a yarn 100D type lof welt hookconstructed in accordance-With 59 .maylpass down and ofifrom thelatchonto the this'invention; beard..

Figure 4"`is a side" elevation of thelsame'gg v, `vIt' Willalso be appreciatedthatthelatch v46in Figure 5 is an enlarged sectiontakenon Vine `either of its'extrerne positions to which it may 5- 5 cfFigure 3; f Ice swungl is 'adapted to lber caughtandqdisplaced Figure 6 is an enlarged section taken online 155; .by av loop or. strand of yarnqbei1l1grnoved rela'- i tivelyfalong thelength of thefwelt noch, ...attire Figure 7 is a perspectiveon'considerably 'en'- .hookifbeard engaging position ofothevlatcm lthis largedscale of thepreferred'former-latch em.- result .mayzi-follOW, lOm-thefleldllg. depression y bodied'in the welthook; 1 f Sofa-:thejflexible1h00kbf2a1d 44.1123 lilflf? ten si n ;of

.Figure' to. 16 inclusive are someWhat-diagvran'i.- A330 the.` yarnloop due to .whichifhe. lmp-Sliding up side of their normal top ends. i;

.The ordinary notch-sinkers `S are mounted to vare intended 7'to yarn operates to swing said latch around from, its lowered orA hook beardengaging position to" its raised or hook beard disengaging position., i

In practice, the hook beard 44 and vthe latch 46 preferably are cooperatively shapedesothat the tip 50 of the latch normally` projects slightly outwardly of the hook beard; tip- 54, thus 4assisting to assure that the relatively raisingyarn loop will enter between the-hook beard and latch,`

tion of movement which the respective instruments have vjust passed,in brngingl them to the iuustrated positions.

In the position illustrated in Figure' the welt ...hooks 34 have advanced, risen, tilted upright,

hurdled over. the needles, and descended behind .the latter, with the hook beards 44 facing rearwardly and, thehhook tips 54 lower` than the -sinkers SX.

Inv the position 'illustrated in Figure 9, the

hooks 34 have. been bodily shifted irontwardly, VThe lnarrowingmotion has caused the sinkers S even if the pressure of the yarn is deficient.

its raised position, the latch 46 stands out from the hook shankf36 .tofasuflcentf extent to Vinsure 'that fa yarn. loop: sliding relatively.. downwardlywill engage .between 'theshank' and latch, and with `continued descent, will cause the latch to- Swing around ianddown toits -hookbeard -guarding or engagingposition.. v l

i The. bodyof the. shank aetetwee'nftiie pivot `ears-48 is shaped to constitute two stop surfaces 158` and 60, one on` each side of .the pivotvpin 56.

The lower :stop vsurface .on that: side ofA the pivot pin 56 nearest to the tip 54 of; the-hook beardx44 limits the depression of .thel latch 461towards.- the shank l36 Aso .thatgsaid latch cannot follow.. the hookbeard 44 inwardly Vwhen the yarn is intended :to pass from the hookheard beneathfthe latch.' The other 'stop surface Alill prevents` the raised latch 46 from lying flatly against .the`

shank 36 and'. so insures -lits protruding to admit *the yarnbetweensaidlatch andshank'... The

latch.` 46,! therefore, `.needs no i: springs -..n`or.g.r any shifting or reversingsmeans, other .than the relativemovements of the 'yarn itselfv as the-welt hook34' is shifted downwardly and upwardly. 1

The operation of the welt hooks 34. will bemore lclearly understod 4upon reference to. Figures. 8to -16 finclusive,. showing lthe various:.-successiye stages or `positions of'saidwelt hooks "for, receiv- Lingsinker loops'iof the .initial course knittedby the `needles of the 'lmitting"machine`,

turning ysaid loops Ato Athe needles. r

and i. re-

In f 'these i figures, ithere :has .been :shown t only Ithose partsv of .a full-fashioned knitting machine .which are operatively associatedwithqthe :welt

`@The knitting .needles are vindicated at IN; and are provided-with .spring beards` B vat-'the rear slide, as usual,v ina sinker head H,:one portion P as customary in theart., n In f Figure 9'isVv indicated. an'.l ordinary yarn. carhooks for cooperationin they formation .of welts.

rier C operable to lay yarn Aon thesinkersfS behind the needles N,and,=in".`a'ccordance .with this i60 invention, behind; the welt `h'ooksf34 in themanner to be described hereinafter'. The knockover bits K' are of Yconventional...construction .Land

united in a knock-'over frame F: l

y' Thefrst general part of fthe operationis.theH

hook-up, the various successive stages ofwhich are representedin'Figures 8y to 13 inclusive. In the firsty part ofthe y 'ventional-'narrowing' motionsA are takenladvan- I 'tage of, the vmachineteingfinmauy Set 1;0;.put the nedles 1\I,-sin'ker's` S, and *knockover 4lbits.- K lthrough lthe narrowing*Imotions,` 'in 4cooperation v hook-up. operation,`-.the con- Withfwhich the welt hooks 17341 are vmanipulated. The arrows appearing in-1thevarious diagrams show approximately ithe directo retract and thev needles N to rise substantially.

The frontward shift of the welt hooks, thereand toclose the :beardlB thereof. These. move-- ments `bringthe parts-fin 'position to receive the first. course of yarn laidi upon'. theA sinker` tips behind'the y'beards' 44-'of .thewelt hooks 214-.'v The loops of thev first .course are preferablyi formed in the usual manner by .theregular-sinkingand dividingfmovements;1f.; a .i1. y

' The initial coursehavingbeen laidpthe parts reach the position' shown 'in Figure :10, wherethe yam Yzisjseen as passing-1 around the sinker throats and to the rear of the welt hook .beards 44. Aloop is-thuscaused :to-'passfaroundjthe hook beard ...44. below zthe latch, 45:..- vIt- :will be noted that :inthe position-` shown `in sa'idFigure I10,` the -frontward thrustioffthe-sinkers S applies substantial `tension to the, yarn Yijso that. the yarn deectsforwardly .thebeard 44 of each welt hook `34, thus. creatingia thread .passage betweenthe welt hookbeard 4 4 .and latch=4i such hook.,4 Withoutthisaction and tension, the relatively rising. `yarn would accidentally pass from the `Welt hook .beards onto the latchxandjhus obstruct `the performance kofV the` subsequent .actions toybe described.-

As above stated, vFigure -10 .shows k,the jloops as .positioned on the hook beards 44 below Athe latchesv46. Therefore,- the. ,yarn laysin `front ofthe sinker'throats and behind` thewelthook beards and associated'needles. ,y

InA the position shown, in lFigure 11,. the welt hooks 34have lowered somewhatzmore than sufficiently to cause the yarn' torise. and pass from the hook beards 44 andbeneathth'e latches.v 46. This .shift,y as shown, `is carried so far that vthe .yarn rides. up on the latches 46,opening, them but; notapaming' beyond them.` ,The needles N lare shown.` as partaking ofthe lowering movement of the `hooksgThe, stage shown -is 'only momentary, since the hooks 34 immediatelyrise again Whilethe needles Ncontinue todescend. This brings the operation'- to-the position shown vin li'gurew12i The hook rise has .caused the yarn Y to ienterbetween tl'rehookv shank v36 and .beard 44'. -.Thexdescent of the needlesNnhas brought their beards B opposite the press. ledge portion P.. The needles` =N `and vhooks 34`have moved rearwardlyuntil the needle beards 'Bg are pressed closed; The hooks 34, therefore, carrytheloops free of the needies,;ea'ch.hook beingin the plane '-.ofsits empty needle. l'

The hooking-up operation is completed asiollows;` .f Y L f .it

In the vposition shown in Figure 13; the .needles .-Nxhave moved -fforward1y and downwardly while the sinkers S; and the hooks thereupon tilt over through positions'shown in dotted-lines in.Figure 13,' towards their substantially atwis'efposition in-which they operate to draw-off the fabric being knitted.

I As the welt fabric knittingprogressespthe welt hooks 34 advance, rise, and tilt upwardly, as shown in dottedilin'esfin Figure 14,prepa1'ator`y to the transfer of' the .initial Sinker'loops back onto the needles N. Y 'l w t VAs indicated in the full Alineinligure v14g-the sinkers S have shifted frontwardly.'andbothends of the fabric lie between .the sinkers S and knockover bits K. The needles N have engaged the initial sinker loops on the welt hooks 34;y At the the loops which pass from the latches 4E;` tothe As shown inlFlg'ures 16, as the needlesNrise,

the initial sinker'loops are forced by thesinkers S- down onto theneedleshanksfwhere they re'- main in superposed relationship'withthe loops of the last course of the welt kfabric to-be locked on the next succeeding "course of the' stocking legfabric.- i The positions shown in dotted lines {inFigure 16 illustrate the'returnv movementeof-thewelt hooks 34 to their initial inoperative-'f position where they remain untiltheenext Welt forming operation is to take place. i

Manifestly, it will be understood that the construction Iherein shown and described -iseapable of certain modications without departing from the gist of the invention. Therefore, any modicatons coming within the-scope -of--th'e sub'- joined 'claims are to be consideredjwithinf the spirit of the inventiony i What Ikelaim-is: i j 1. A welt hook comprising a shank, a spring beard formed continuously with-the s hankl at one end thereof, a latch mounted ononeside of the shank at a" point'- adjacent to the tip of said beard, and a needle receiving groove formed on the opposite side of the shank.` g

2. A welt hook comprising a shank terminating` at oneend with aj relatively long 'beard capable of springably movingV towards and'away from the body of the' 2shank; a latch pivotally mounted on the beard side of "the shank to nor- 4znally engage the tip of the beard when sprungawayfrom .the body-of the` shank;A and `stop means disposed' to prevent the latch 'fro ing themovement of y the beard fwhen V'sprung towards the body ofthe shank. Y' ff 3. A welt hookcomprising' a Ishank terminat-l ing at one'end witha relatively long "beard-foapable of springably moving towards-and away from the bodyfof theshank; -al-atch pivotally mounted on the beard sideofh the shankto normally engage the tip' of'y the Lbeard when sprung away from the body of the shank; stop meansE disposed to prevent the latch from following the movement of the beard when sprung towards the body of the shank; anda needle groove formed follow- *on that side oftthe shank'opposite to the beard f side-thereof.' 4 f. .l .f .y l 4".--A Awelt -h'ook comprising a shank terminating at/one end Withazrelatively long beard capable" ofspr'in'gably vmoving 'towardsfand 'away from the bodyy of vtl'les'han'k; .alatch pivotally mounted `:onfthe beard side-of 'the shankto normally engage the' `tiplof the'beard whensprung awayffromxthebody "of the shank; and Astop means on the -shank 'engageablewith the latch to prevent the same from following the movement o'f fthe beardfwhen sprung towardsthe'body of the'shan'k ji '5. A weltlhook comprising-a shank terminating at' onel e'nd` with ia relatively long. beard' capable of 'springablylmoving'towards-and away from the` lbodyrof the'shank; alla'tch pivotally mounted on the' beard side of lthe shank tornormallyengage'thetip of the beard when sprung. away `from the' body Aof the shank;` stop means; onthe shank engageable with the .latch to prevent the saine` from following 'the movement of the Abeard 'whensprung towards the body of the'shank; and a needle. groove formed on that shankopposite to the .beard side thereof. l

6;' A welt hook comprising a shank terminating atv one end' withla spring' beard'movable towards and away from" thebody ofthe shank; a'latch pivotally mounted on the beard side of the shank tosw-ingv to opening-fand closing positions,"said latch, when swung'towards closing positionQengagingthe tip ofthe beardy when:..:`swung away from the' bodyfof the'shankyisto'p means dis'- -posed topre've'nt thelatch `when swung to' closing vposition 'from following the movement "ofv4 vthe beard towardsthe body of the shankpand stop -means disposed' 'to prevent the latch when swung to opening'pos'ition vom en the. shank. i Y '7.Y- A welt `hookconfiprisinga shanktermin'ating rat one endwitha spring beard movable towards l gaging thebody 'of andi away'from* the--body'of the shank;` a-'latch -pivotally 'mounted on the beard side' of vthe shank to` swingfto opening andclosing positions, said' F '-la'tch, when swung towards closing'position, en-

gaging thetip of ther beard when swung away -from the body of the shank; stop'means-di'sposed to prevent thevlatchwhen swung-t0 closing 'positionlfrom following' the1moveme'nt of the bea-rd Itowards the body' offthe' shank; stop means'di's'- posed to preventth'e latch WhenswungV vto opening position from engagingthe body ofthe shank; and a needle.- groovelfo'rmed on that side'ofthe shank opposite to'the beard side thereof. Y 48. y.A welt hookcomprising a shank terminating at one endrwith .a spring' beard movable towards and yaway from1the`lbojdy of lthe shank; a f' latch pivotallylfmoun'ted onthe beardl sidey of the'shank to swing to "opening 'and-*closing positions; said 4latchtfwhe'n swung' towards closing positioneri- .gaging thea-tip of-th'ev jbeardwhen' swung'away from the.\bo dyof the-shank;"stop means on the shank engageablefwith the latch when swung to closing positionxtofprevent the sam'e from following'thel movement otlthe `beard towards vthe 'bodyof the'y shank 1;" andfst'o'p means on thefshank engageable .with the latch whenswung to opening positionto prevent its' engagement with the' body f a-A weithook'coihprisinga shaiikfterninatihg lat oneendr'fwith a spring beard 'movable towards and away from the body of the shank;` a latch pivotally mounted on'the beard side of the-shank to swing to opening and closing positions, said latch, when swung towards 'closing position, en-

side ofthe gaging the tip ,of thefbeard when swung away from the body of the shank; stop means on the shank engageable with v the latch when swung` to closing positionfto preventthe samev from fol.-

lowing Hthe movementof the beard, towards the 1;

lhook member having an elongated shank mounted for longitudinal up anddown movements in relation to a yarn in engagement therewith-and constructed :with a loop holding ilexible beard at the lower end of its shank; a-beard guarding latch pivoted to the shank above the hook to -swing on an arc longitudinally of the shank and beard for placement in an upperrposition and in-alower position, said latch lbeing -so formed that when in its upper position the yarn sliding along the'shank, and when in its lower position the yarn sliding along the beard,.may enter under the latch whereby all necessary latch reversing movements 4for `loop hooking and discharging purposes'may be effectedl by the up and down movements of the welt to thelyarn. f

11. `In-.a united bank of.welt .hooks adapted to` cooperate with the 4needles and otherknitting instruments of `a Vfiat :knitting machine: -a welt hook member inrelation vhook member having-an elongated shankmount- `ed for longitudinal up and down movements in relationfto a yarn in engagement therewith and constructed withl a loop holding ilexible Vbeard at the lower end of its shank; a beardguarding latch pivoted to the shank above uthe Ihook to swing on an arc longitudinally` of the shank and beard forplacement in an upper position and in a lower position, saidl latch being` so formed that when in its upper position, the yarn sliding along the shank, and whenin its lower position, the yarn sliding kalong the beard, `may enter under the latch whereby all ynecessary latch reversing movements for loop hooking and dischargingA purposes may be eiectedv by the up and Adown movements ofy the welt hookmember in relation to the yarn; 'and said `hook member having positive' stops limiting the swing positions of the latchesso that its .tipwill protrude and form o a yarn entering recess beneaththe tip.

12. Inv a united bankgof ;,w,elt hooks adapted tol cooperatewith the needles and" other knitting instruments of a flat knitting machine: afwelt hook member having anelongated shank mounted for longitudinal upfanddown movements in relation to a yarn in y,engagement therewith'and constructed with a loop holding flexible-beard auth? 10We1 end 0f: sshank; a beard guarding latchpivoted to lthe shank vabovetl'ie hook to swing. on an arc ylongitudinallyjof,v the :shank and beard for placement in" an upper 1 positionli and in a lower position, saidlatch'beingxso formed thatwhen in-its, `up'per position, the yarn sliding along the shank,andfwhen,infits lower. position, the yarn sliding along the beard, may enter under the latch, whereby all necessary-latch reversing movemeetsrforyloop hookinsind vdisychanging purposes ,may be effected by the vrup and down movements of thawelt hook member -in relation tothe yarn; vsaid hook member having positive stops limiting the-swing-,positions of the latch so that its tip will protrude and forma yarn entering-recessbeneath the tip; and said shank-having aV needle beard receiving groove formed on the side thereof opposite thelatch.;

13. A welthook Ycomprising a shank having on one side a spring beard and alatch therefor, and` on the opposite vside av needlereceiving. and covering, groove. Y p 14. In a unitedlbank of-welt hooks adapted to cooperatewith theneedles and other knitting instruments of a flat knitting machine: a welt hook member-having an'elongated shank mounted Aforv movements in relation to a yarn. in engagement therewith and constructed with a loop holding beard;;a beardguarding latch pivoted to the' shank toswing` 0n an arc longitudinal of the shank and beard f or placement in a beard opening position and a beard closing position, said latch beingso formed that when in its beard opening position, the yarn sliding along the shank, andwhenin its beard closing position, the yarn sliding along thel beardyrnayy enter under the latch-whereby. all necessary latch reversing movements for loophooking and discharging purposes may be effected by the movements of the welt hook memberin relationftothe yarn.

15. A v velt,-hook-comprisingga shank, a spring Vbeard formedat-oneend vof the shank andex.-

tended in a planeparalleling a portion on one lside of the shank, a latch mounted on saidV side of the shank anddisposed `toengage the terminating end portion of the Abeard but leaving the lmajor portion kof saidvfbeardA-,exposed whereby a -yarn sliding .on the latter may pass between the latch andsaidportion of the beardcovered thereby, rand `a lneedle receiving and covering groove formed on, and locatedto extend throughout, a portionv on the other side of the shank opposite to said portion on the first mentioned side of the shank, 1, n i v y 16. A Vvvelt vhook comprising a shankhaving a hookend ,withrits tip extended to terminate ata point alongtheintermediate portion onA one sideof said shank, a latch pivoted at one end to said side of the shank and disposed to. cover said tip of the hook end for closing the latter, the freev end of said latch extending beyond said tipbutleaving the major portion of said beard l exposed,` whereby. au yarn sliding on the ylatter may enter beneath. said latch, and a needle receiving and covering groove formed on, and located to extend throughout, a portion on the other sidelof the lshank opposite to said portion onthe first mentioned side of the shank.

117. yAy welt hook` comprising a shank provided ``with a hook end` and a needle receiving and covering groove, said hookg-end extending over a portion on oneside `of said shankv and having alength suflicient to form; anouter.- surface capable of being engagedg'by a yarn-.tor the sinking of a loop thereover, and said. groove being located lto extend throughout a- -portion on the other side vof the shankvv opposite to said portion .on the :first ,mentioned'side ofthe shank and .over which said hookfend extends. j 1 

